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May I ask, are we supposed to use the long, or short small screws for the small part cooling fan on the right side for oem hot end, stock fans for ender 3 pro?

I tried the long, but could not get it to reach the hole on the right, that holds the nozzles so the right side sags a little now.....the short screw reached on the left side. I tried moving it up and down to find the right spot but never could....I imagine its meant to reach all the way through to one of the three holes correct?

Thank you!